Type-writing machine.



'No. 741,789. v I PATENTED 0051320, 1902 -3. THi'IRBY-.. TYPE WRITING MACHINE.

APPLICATION FILED DBO. 1901.

I0 IODEL.

' 1m: norms PETERS coy, PNO OifiHOJWASHINETON. n, c,

rotation in the other direction.

UNITED STATES Patented October 20, 1903.

EDUARD THUREY, OF DEUTZ, GERMANY.

TYPE-WRITING MACHINE. I

SPECIFICATION formingpart of Letters I E'atent No. 741,739, dated October 20, 1903. Application filed December 17,1901, Serial No. 86,221. (No model.)

To all whom it may concern:

Be it known that I, EDUARD THtiREY,a citizen of the free city of Hamburg, residing at Deut-z, near Cologne, Prussia, German Empire, have invented new and useful Improvements in Type-Writing Machines, of which the following is a specification.

In type-writers with a type-cylinder as hitherto employed the type-cylinder is adjusted to bring it into position for impressing the various letters or signs by being turned on its axis in one direction or the other, two actu ating-arms operated by key-levers being employed, one arm for effecting the rotation in one direction'and the other arm for effecting In this construction if both arms are to be alternately set in motion it is necessary that the working parts take a position of repose, so that one of the said arms shall not make any disturbing movement while the other of the said arms is in motion. This might, forinstance,occur if accidentally two key-levers for effecting rotation of the type-cylinder in opposite directions were simultaneously operated or if a key were struck before the previously-operated key had returned to its position of rest. For this reason it is apparent that while the one actuating-arm is in motion the other should be arrested. For arresting the typecylinder in the zero position and for preventing a simultaneous actuation of the same by two arms Iaccording to my invention arrange upon the axis of the type-cylinder a disk provided with a stop which in the zero position of the cylinder is between the two arms, the said disk being also provided with a ring having an opening on each side of the said stop. Each of the actuating-arms is provided with a toothed segment to act on a pinion on the axis of the type-cylinder and also with an extension or pin, which extensions or pins in the position ofrest of the type-cylinder are situated,respectively,on either side of the aforesaid stop and opposite the opening of the ring.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a side view, and Fig. 2 a plan, while Fig. 3 shows a modified construction.

a and a are the actuating-arms; b, a pinion mounted upon the type-cylinder axis a, on which act the toothed segments 15 and a" on the ends of the actuating-arms. Upon the type-cylinder axis 0 is fixed a disk M, consisting of the ring or flange r and the stop n. On both sides of this stop an opening or passage m is provided in the ring for the pins 8 and 8', provided on the actuating-arms.

The mode of operation of this device is as follows: In the zero position of the type-cylinder any movement thereof is prevented by the stop n of the disk M bearing against the projections or pins 8 s of the two arms a a. When one of the arms-for instance, the righthand one--is moved, it liberates the stop, the extension or pin 3' of the arm enters the opening m of the ring, and the segment 2." acts on the pinion b so as to turn the disk and the type-cylinder. During the movement of the type-cylinder the other arm, a, is locked by the ring r on the disk M as the extension or pin 8 of thatarm a bears against the periphery of the said ring, and the said arm can What I claim, and desire to secure by Letters Patent of the United States, is-

1. In a device for adjusting the type-cylinder of a type-writer, the combination with the type-cylinder shaft and a pinion mounted to rotate therewith, of two actuating members carrying oppositely-arranged racks for engaging the pinion to rotate the type-cylinder in opposite directions, a stop and an annular flange mounted to rotate with thepinion, and projections on said members for engaging said stop to lock the type-cylinder in its normal position and for engaging said flange to lock one of said members during the actuating movement of the other of said members, said flange being formed to leave an opening to lock one of said members during the actuating movement of the other of said members, said flange being formed to leave an opening on each side of said stop to permit said members to make their actuating movements, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witncsses.

EDUARD TIIUREY.

\Vitnesses:

CHARLES LESIMPLE, CARL SCHMIT'JT. 

